Highgrove Oxford Crib 5 Contract Mattress - 3ft Single; The Oxford mattress is specifically manufactured to strict Crib 5 specifications thats required for hospitality and commercial industry. Its compulsory for the above to comply with BS7177 ignition fire regularity standards that go further than those required for domestic use. The mattress is fully upholstered in a 100 cotton fabric and benefits from a hand tufted finish that ensures its fillings stay in place. The core of the mattress consists of a robust 13.5-gauge open coil spring system thats made up of rows of springs running from head to toe. Each row is connected by a spiral wire, known as a helical wire, with a 6-gauge rod-edge wire around its perimeter to strengthen its border. Its designed to be double sided and requires to be rotated and flipped over on a regular basis to enhance its support and comfort. Although Crib 5 Mattresses are designed for the trade industry, they are still used domestically due to their stricter fire regularity standards.